Lens accessory



FIG. 1 is a perspective view of the lens accessory;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for lens accessory, as shown and described. 